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The researchers attributed the reduction in deaths to more stringent federal regulations over the period, particularly the Clean Air Act and the 2002 NOx State Implementation Appeal. They have also set specific rules for vehicle emissions. The researchers said these policy changes have had enough impact to cope with increases in population, electricity demand and the length of daily commutes.
The team suggested that further improvements, such as the 2011 interstate air pollution rule, had probably contributed to further improvements since 2010. They had the intention to improve the air pollution. study pollution-related deaths since 2010 using other forms of data.
Whether pollution levels continue to decline or not is another story. Researchers are worried about the current US government's anti-scientific stance and deregulation policies that may slow or even reverse progress on air quality. At the same time, technology is not left out. Increasing the adoption of clean energy, electric cars and hybrid vehicles could help, as could a reduction in the number of cars.
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